ORDA - Online Research Data Archive 
    • Login
    View Item 
    •   ORDA Home
    • University Hospitals of Derby and Burton NHS Foundation Trust
    • Division of Cancer, Diagnostics and Clinical Support
    • Pathology
    • View Item
    •   ORDA Home
    • University Hospitals of Derby and Burton NHS Foundation Trust
    • Division of Cancer, Diagnostics and Clinical Support
    • Pathology
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    KI67 and DLX2 predict increased risk of metastasis formation in prostate cancer-a targeted molecular approach.

    Thumbnail
    Abstract
    BACKGROUND: There remains a need to identify and validate biomarkers for predicting prostate cancer (CaP) outcomes using robust and routinely available pathology techniques to identify men at most risk of premature death due to prostate cancer. Previous immunohistochemical studies suggest the proliferation marker Ki67 might be a predictor of survival, independently of PSA and Gleason score. We performed a validation study of Ki67 as a marker of survival and disease progression and compared its performance against another candidate biomarker, DLX2, selected using artificial neural network analysis. METHODS: A tissue microarray (TMA) was constructed from transurethral resected prostatectomy histology samples (n=192). Artificial neural network analysis was used to identify candidate markers conferring increased risk of death and metastasis in a public cDNA array. Immunohistochemical analysis of the TMA was carried out and univariate and multivariate tests performed to explore the association of tumour protein levels of Ki67 and DLX2 with time to death and metastasis. RESULTS: Univariate analysis demonstrated Ki67 as predictive of CaP-specific survival (DSS; P=0.022), and both Ki67 (P=0.025) and DLX2 (P=0.001) as predictive of future metastases. Multivariate analysis demonstrated Ki67 as independent of PSA, Gleason score and D'Amico risk category for DSS (HR=2.436, P=0.029) and both Ki67 (HR=3.296, P=0.023) and DLX2 (HR=3.051, P=0.003) as independent for future metastases. CONCLUSIONS: High Ki67 expression is only present in 6.8% of CaP patients and is predictive of reduced survival and increased risk of metastasis, independent of PSA, Gleason score and D'Amico risk category. DLX2 is a novel marker of increased metastasis risk found in 73% patients and 8.2% showed co-expression with a high Ki67 score. Two cancer cell proliferation markers, Ki67 and DLX2, may be able to inform clinical decision-making when identifying patients for active surveillance.
    URI
    https://orda.derbyhospitals.nhs.uk/handle/123456789/154
    Collections
    • Pathology [52]
    Date
    2016-06
    Author
    Van Schalkwyk, Gerhard
    Show full item record
    (554) British Journal of Cancer.pdf (1.106Mb)

    copyright © 2017  Derby Teaching Hospitals NHS Foundation Trust
    Contact Us | Send Feedback
    Powered by KnowledgeArc
     

     

    Browse

    All of ORDACommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    Researcher Profiles

    Researchers

    My Account

    Login

    copyright © 2017  Derby Teaching Hospitals NHS Foundation Trust
    Contact Us | Send Feedback
    Powered by KnowledgeArc